why 4-way chess isn't founded in chess.com?

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khaled-mo
or why there is no app or website to play this style of chess?? can someone tell me about a way to play 4-way chess please? i think that is a great game, and i want to try it
AndersElsborg

http://zoldsakk.hu/en/variants.php?cat=9

This is the best I know about.